## Algebra 1

$n^{4x}$
Given : $n^{5x}\div n^{x}=$ $\frac{n^{5x}}{n^{x}}=$ $n^{5x-x}=$ $n^{4x}$ (since $\frac{a^{m}}{a^{n}}=$ $a^{m-n}$)